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Old 02-28-2011, 10:11 AM   #1
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trane xv90 Fault code


I've read the posts. I have a 5-6 yr old XV90. I am getting 2 fault codes; 2 red blinks for system lock out & 3 red blinks for a pressure switch fault. I've reset the system & cleaned the flame sensors. The system fault is cleared but the pressure fault remains. Any ideas? Thanks

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Old 02-28-2011, 10:58 AM   #2
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trane xv90 Fault code


Check your pressure valve, Aux fan and exhaust pipe.

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Old 02-28-2011, 02:39 PM   #3
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trane xv90 Fault code


check the drain hose at the bottom of the inducer and remove and clean the condensate trap
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